| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 785 |
3.2%
|
| 2 | Monthly | 833 |
3.4%
|
| 3 | Yearly | 1513 |
6.2%
|
| 4 | Not all | 21457 |
87.3%
|
| Sysmiss | 582 |